Incandescent mantle and burner therefor.



D. ANDERSON. mommml mm: LND mmm Taunton. APILIOLTIOI FILED 133.26, 190|.

1,360. Patented Feb.2,1909.

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D. ANDERSON.

INUANDBSOBNT MANTLE AND BURNER THEBBFOR.

Arrmoulon FILED H1B. ne, 190e.

91 1,360. Patented Feb. 2, 1909.

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INCANDEBCENT MANTLE AND BURNER THEREFOR.

Application filed February 28, 19H6.

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lic it known that l, lMvlo Aivnnnson, ol (lots'wold (fottage, (.ots'wold ltoad, Westclrll oil-Sca, m the county o'lv ltr-sscx, lilngland, cn-

gincer, have invented certain new and use ful improvements in or .Relating to Incandescent M antics and Burners 'lhcreiorrlhis invention relates to improved in yerted incandescent mantles and improved inverted gas burners therefor.

According to this invention the improved mantle is constructed in the 'form oi a com paratively wide shallow cup-shaped annulus (preferably continuous) lormcd with a central hole and having its concave surface uppcrmost. The burner head is constructed to discharge the combustible mixture of gas and air in the form of an annular jet in a downward and more or less outward direc,-

tion into the annular mantle by a continuous annular opening or by a series of openings or tubular projections intermediate f the smaller and larger circumference mantle in such manner that by reY direction of discharge combined wi h draft, the normal Haine will have a relativcl)r Wide annular shallow cup-shaped form with its convex surface downwards and outwards, whereby the convex surface oi the liame will sweep radially over a proximately the entire concave upper suriiace of the mantle, the flame or products of combustion issuing between the outer circumference of the mantle and the circumference of the burner headso that the fiame in normal operation of the burner will not pass through the wall of the mantle. In some forms the supply may be from one or more tubes passin to or directing the gas, in the manner an direction referred to, to the interior of the annular mantle.

u I have illustrated some forms of my inven tion in the accompanying drawings.

Figure 1 is a sectional elevation of the improved inverted burner, supported from beow. Fig. 2 is a sectional under side view showing only the burner head and tube as seen from the plan indicated b rthe line A -B in Fig. 1. Fig. 3 is a simi at, view to Flg. 1 of a modified construction adapted as a burner supported from above. Fi 4 is a similar view to Fig. 3 of a mod` ication. Fig. 5 shows a further modified construction. Fig. 6 a section of Fi 5 on line C-D Flg. 7 1s a part view of ig. 5 showing the means whereby same can be supported from Spociiicntion oi' Letters Patent.

Patented Feb. 2, 190i).

Serial No. 303,429.

below. liig. H is apart View in vertical cross .sl-.ction oi a modified |`or,|n ol' mantle and burner head. Fig', i) is a central vertical .section partly in elevation oil a inodiiled con struction oln the improved burner, and Fig.

l() is a sin'rilar view oi' a further n'iodiiicd construction ol the improved burner.

ln Figs 1 and 2 an inverted burner is shown wherein the burner head or bodypart thereof a. is in the form of a hollow casing somewhat in the form of a disk or of mushrooln shape being partly spherical on the upper side and havin a tube l) opening into it at its under side t e tube belng spread to forni thc underside b oi the body part which terminates at a suitable distance from the edge of the portion c. so as to leave an annular space c between the parts a and o which an nular space forms the aperture by which the gas and air issue in a downward direction within the mantle d. The downward direc tion of discharge combined with the u draft will produce a comparatively wi e annular iame of shallow cup-shape having its 'convex surface downwards and outwards. The mantle d is foimed in cross section to conform to the shape oi the annular llame. That is to say it is in the form of a comparatively wide shallow cup shaped annulus adapted to surround the tubular part b which passes through a hole in the mantle, the outer edge of the mantle is fastened to a ring e which ring is supported from the body art a of the burner in the usual manner by ugsfengagin with recessed lugs upon said body part. he ring e is space a suitable distance from the bod part aso as to allow ofthe products of com ustion from the flame passing up between same. Within the body part a is mounted a erforated shield h clis-` osed above the su ipe b and a spreading sone i may be providedili required to secure an even distribution of the gas and air. The shield h ma serve as a means for coupling the parts a an b of the body part to ether by means of a screw, such as y'. The bo y part of the burner is mounted upon the up er end of au ordinary air and gas mixing chain erc with the usual tubular extension Z.

In operation it will be seen that the as and air from mixing chamber k passes up t e tube b and issues into the annular shallow cup-shaped mantle d b the continuous an nu ar opening c the ame passing downwardly 1n the form of an annulus and then passing upwardly and outwardly agalnst the mantle toward the space between the ring e and the body part ay although it may in some cases with excessive gas pressure also pass outside and around the mantle. The mantle when in use will thus present an annulus olI light disposed beyond the tube I; and mixing chamber l" by which the mantle is supported from the gas sup ly pipe, and by reason of the mantle being Jeyond thc sup ort any ap prcciable shadow will. be avoided and a better distribution of the light will be insured. If the said burner is desired to be supported from above with an over-head gas supply the construction may remain very much the same as regards the disk like body part and mantle as will be seen by reference to Fig. 3 which shows a modification of this kind. In this arrangement the perforated shield and spreading cone such as usually employed in burners are inverted and the upper part of the burner is provided with a reector o around the tubular extension from the air and gas mixing chamber a. The open end of the tube b2 1s closed by a suitable plug which if required may serve to support a galli-i lery q by means of downwardly extended rod r, the said gallery carrying a globe s of suitable shape.

In Fig. 4 I have shown another form of the improved burner supported from above. In this form the as supply is introduced at the top of the bo y part a by means of a pipe t which is projected through the body part by an extension t which terminates at or about the entrance ofthe lower air supply tube b3, the pi e t is fitted at its lower end with a suitab e upwardly directed nozzle such as u which consists of a ca of slightly larger dimensions than the en of the tube t so as to allow of the gas jets being formed in its upper ed e as at w. These gas jets w are adapte to direct the gas supply u wards into the air tube b3 in such manner t at the gas and the air in the air supply tube will mix in the interior of the pipe b and the body part a and then issue by the annular nozzle c to the interior of the mantle in the manner as previously described.

The globe shown may be supported in any suitable manner from above or below the burner. Fi 4 shows the globe s su ported from above y means of a ring rc. Wliiere the globe is entirely closed at its lower end it may e desirable in some cases to provide an annular shield y to receive and direct the upwardly iowing hot air on the one side and allow the inilowin cold air to ass freely down a ainst the g obe on the ot er side of the shie d.

The bodyv art e of the burner may be made of porce ain or a suitable kind of earthenware or refractory material.

Fi 5 shows a construction similar to Fig. 4 bu wherein the lower portion of the tube b is fitted with a downward extension b* of considerable length so as to open at a distance from the burner or outside the globe or shade z, said shade or globe being if required su )ported as shown by the lower end of the tube portion b, The portion b and the globe being secured by a nut such as t attached to the nozzle u whereby on unscrewing the nut the globe and the lower part b4 of the tube b may be detached whereby also a new mantle may be put into position. In this construction the entire supply of air is drawn from outside the globe.

It will be obvious that the constructions shown in Figs. 4 and 5 may be readily adapted to a burner obtaining its gas supply from below, it being only necessary to close the upper end of the tube t by a suitable cap and iit a nozzle at u so modified that it may be connected to an ordinary gas su ply ipe as shown in Fi 7 and if desired t e tu e portion b may e divided into various parallel longitudinal divisions forming a set of tubes corresponding with the gas jets from the nipple beneath as shown in a section in Fig. 6.

In a modiied construction shown in Fig. 9 the improved burner comprises a central tube 2 screwed at its end as at 3 and having central holes 4. Fitting around this tube 2 are two disk-like members 5, 6, dis osed one above the other and spaced apart y a central collar or sleeve 7 which surrounds the holes in the tube 2 so as to allow the gas to pass therefrom intox the body of the burner wherefrom it issues through the annular opening 8 between the parts 5 and 6. The members 5 and 6 are covered by metal shield plates 9 and 1() which are screwed u on the ends of the tube 2. The upper sl'iield is formed with lugs for supportin the mantle as at 11. A cap 12 is provide adapted to fit either end of the tube 27 whereby a burner such as described may be coupled to a gas and air su ply fitting such as 13 at either its upper or ower end to form respectively an inverted or u right burner. The cap w1ll be placed over t Ae end which is opposite the gas supply, and if a by-pass is re uired it may be provided by passing a tube t rough the tube 2 and into the cap 12, the ca being provided with a suitable passage lea in to a byass burner tube suitably dispose in regar` to the burner.

Fig. 10 shows a construction similar to Fig. 9 where the disk-like members are dispensed with, the body part being formed of two members 17 and 18 screwing upon the central tube and having a perforated metal sleeve 19 disposed around the apertures in the central tube or otherwise fitted thereto.

I wish it to be understood that the annular discharge orifice in the burner head whence the flame issues need not be continuous but may consist of a series of openings or holes or it may be composed bya series of tubular projections opening in the mantle. The

bod part of the burner may in some cases be in the form of an annulus as that part where the flame issues, the supply being connected thereto from a central supply or a central mixing chamber.

The invention allows of mantles being made which will give high candle ower. For such mantles it is desirable that t e discharge be inclined more outwardly, the amount of inclination being a matter of design in relation to the ressure. One form of this is illustrated in Fig. 8, where the mantle is more flattened in order to conform to the shape of the more outwardly inclined flame.

What I claim and desire to secure by Letters Patent is- 1. In burners for incandescent gas lighting the combination of an inverted burner head having a discharge aperture of continuous annular form in plan, and a relatively wide inverted annular mantle of shallow cup shape located with its concave internal surface next to said burner head, sup ly apertures` and connections fitted both a ove the burner head and centrally below the same whereby the same burner head maybe supplied with gas either from above or below as desired.

2. In burners for incandescent gas lightin the combination of an inverted burner hea having a discharge aperture of continuous annular form in plan, and a relatively wide inverted annular mantle of shallow cup shape located with its concave internal surface next to said burner head, sup ly apertures and connections fitted both a ove the burner head and centrally below the same whereby the same burner may be su ported and supplied with gas either from a ove or below as desired.

3. In burners for incandescent gas lightin the combination of an inverted burner hea having a discharge aperture of continuous annular form in plan, and a relatively wide inverted annular mantle of shallow cup shape located with its concave internal surface next to said burner head, means for supporting the outer edge of the mantle centrally away from the burner head whereby an intermediate annular s ace is formed which allows the products o combustion to issue between the outer edge of the mantle and the burner head, a gas sup ly pipe passing downwardly through the lburner head, upwardly directed gas jets at the termination of said supbply pi e and an o ening in the base of the urner ead admitting an air supply thereto through the central aperture 1n t e mantle.

4. In burners for incandescent gas lighting the combination of an inverted burner head-having a discharge aperture of continuous annular form in plan, and a relatively wide inverted annular mantle of shallow cup shape located with its concave internal surface next to said burner head, and means for supplying gas and air to said burner l'ronr bcn-cath tl ic saine centrally through the hole in the annular mantle.

5. ln burners for incandescent gas lighting the combination of a comparatively wide inverted annular' mantle ol' shallow cup shape with a central holo, located with its concave surface uppermost, an inverted burner consisting ol upper and lower disk like members ha ving a through central aporture and adapted to produce when assembled a comparatively wide annular flame of shallow cup shape said 'llame being directed downwardly and outwardly and then upwardly and directing the flame over the concave inner surface of said mantle, a er- Jorated sleeve joining the two said mem ers i together and forming a continuation of the two through apertures therein a tube passing through the central aperture of the body part and projecting from either end thereof and having holes in its side communicating with the interior of the bod r part through the perforated sleeve, metal shield lates fitting upon and supporting said disl ike members and fastened to the ends of said central tube, means for supporting the mantle from the upper shield plate, a gas and air supply connection adapted to be coupled to one end of said through tube and a cap for closing the opposite end. 6. In burners fo incandescent gas lighting the combinatie of a comparatively wide inverted annular mantle of shallow cup shape having a central aperture located with its concave surface uppermost, an inverted burner head consisting of u per and lower dislr` like members having a t rough central a erture and adapted to produce when assem led a comparatively wide annular Haine of sha1- low cup shape, said flame being directed downwardly and outwardly over the concave inner surface of said mantle, a perforated sleeve joining the two said members t0- gether and forming a continuation of the two through apertures therein a tube passing through the central aperture of the body part and projecting from either end thereof and having holes in its side communicating with the interior of the body part through the perforated sleeve, metal shield plates fitting upon and supporting said disk-like members and fastened to the ends of said central tube, means for supporting the mantle from the upper shield plate, a gas and air supply connection adapted to be coupled to one end of said through tube and a cap for closing the opposite end, a by-pass tube passed centrally through said central tube and coupled to by-pass tubes and passages in and supported b the cap at the other end.

7. In urners for incandescent gas lighting, an inverted burner head comprising the combination ol o. central tohe having; aportores i|| its sido midway oll its length, two dish-like members l'orniingr the to|v and hot tom ol a mushroom shaped burner head and 1 screwing; open the opposite ends of said tube,

^ shape supported by said burner head with the concave inner surface ol' the mantle uppermost and in approximate coincidence with the convex outer surface of the flame. 8. In burners for incandescent gas light ing an inverted burner head comprising'the combination of a central tube havin;r apertures in its side midway of its lengti, tno disl lil-1e members forming the top and bottom of a mushroom shaped inverted burner head and screwing upon the opposite ends of said tube, a perforated tube disposed Within the body part between the two members and surrounding,T the' aperture in the'central tube, the outer edsreof the two members vforming the annular flame opening, a cap for closingl one `endol" said through tube and a as and air supplY connection adapted to be 4tted to the other end of the said tube,aeompara-V tively wide inverted annular marit-leef sha1,u

" loweu shapesupported bysaidjburnerhe'ad with t e concave snrfa'eebf the mantle located in 'approximate coincidence with' the convex outer surface ol' thel llamo, a by-pass tohrl passed centralljr through said central tuho and coupled to h y-oass tubos and pas* saires in and supported by the cap at thc other end,

.r. lo a burner l'or incandescent gas lightirrg'; the comhi'oation of a body vpart consisting of a central tubo having; screwed thereon at its opposite onda two shield plates adapted to support between them two disk-like members forming thc chamber of' an inverted burnorhead between then'r, a perforated tube spacing the said disk-like members apart around the through tube, holes in the through tube to allow the gas t0 pass therefrom through said perforated sleeve to the burner head, an inverted annular burner opening formed between the outer extremities of the said disk-like members, a cap for closing one end of said through tube and a as and air su p13r connection adapted to be tted to the otlier end of said tube, a comparatively wide vinverted annular mantle of shallow cup shape having a central aperture surrounding said through tube, means for supporting said `mantle from the burner head with the concave inner surfacey of the mantle 1n approxl- Vmate coincidence -W1th the convex outer surface of the flame.

In witness whereof, I have hereunto si ned my name in the plresenee of two subscri ing Witnesses. 

